Function validate_selected_paths

tools/test_selector.py:287–317

(res: SelectorResult, repo: Path)

def validate_selected_paths(res: SelectorResult, repo: Path) -> SelectorResult:
    missing: list[str] = []

    # validate pytest paths (files/dirs)
    for p in res.pytest_paths:
        if not _is_safe_relpath(p) or not (repo / p).exists():
            missing.append(f"pytest:{p}")

    # validate functional scripts (files)
    for s in res.functional_scripts:
        if not _is_safe_relpath(s) or not (repo / s).exists():
            missing.append(f"script:{s}")

    if missing:
        # Fail-safe escalation: disable fast lane selection, enable full lane.
        # Preserve docs lane if it was independently selected.
        res.lanes.fast = False
        res.lanes.full = True
        res.pytest_paths = []
        res.functional_scripts = []
        res.provenance = SelectionProvenance()
        res.reasons = res.reasons + ["missing_selected_paths"] + missing

        lane_reasons = dict(res.lane_reasons)
        lane_reasons.pop("fast", None)
        full_reasons = list(lane_reasons.get("full", []))
        full_reasons.extend(["missing_selected_paths", *missing])
        lane_reasons["full"] = full_reasons
        res.lane_reasons = lane_reasons

    return res


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